Enhanced structural refinement on eutectic medium-entropy alloy CrCoNiNb0.48 by laser remelting

Jiachen Zhang; Taiwen Huang; Zhonglin Shen; Hai Jun Su; Jun Zhang; Lin Liu

doi:10.1016/j.matlet.2021.130710

Enhanced structural refinement on eutectic medium-entropy alloy CrCoNiNb_0.48 by laser remelting

Jiachen Zhang, Taiwen Huang, Zhonglin Shen, Hai Jun Su, Jun Zhang, Lin Liu

材料学院

Northwestern Polytechnical University Xian

科研成果: 期刊稿件 › 文章 › 同行评审

24 引用（Scopus）

摘要

A novel efficient method to design eutectic medium-entropy alloys with typical lamellar structure is successfully proposed. The CrCoNiNb_0.48 alloy is prepared with microstructure comprised of FCC and Laves phases. After laser remelting, the nano-scale eutectic lamellar is formed and the eutectic lamellar spacing is refined to approximately 30 nm from 300 nm (as-cast). Thus, the hardness of CrCoNiNb_0.48 with laser remelting is approximately 50% increase over as-cast. Moreover, through calculation, the strain hardening exponent of the laser-treated alloy is almost twice of that in the as-cast alloy.

源语言	英语
文章编号	130710
期刊	Materials Letters
卷	304
DOI	https://doi.org/10.1016/j.matlet.2021.130710
出版状态	已出版 - 1 12月 2021

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10.1016/j.matlet.2021.130710

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title = "Enhanced structural refinement on eutectic medium-entropy alloy CrCoNiNb0.48 by laser remelting",

abstract = "A novel efficient method to design eutectic medium-entropy alloys with typical lamellar structure is successfully proposed. The CrCoNiNb0.48 alloy is prepared with microstructure comprised of FCC and Laves phases. After laser remelting, the nano-scale eutectic lamellar is formed and the eutectic lamellar spacing is refined to approximately 30 nm from 300 nm (as-cast). Thus, the hardness of CrCoNiNb0.48 with laser remelting is approximately 50% increase over as-cast. Moreover, through calculation, the strain hardening exponent of the laser-treated alloy is almost twice of that in the as-cast alloy.",

keywords = "Compression properties, Eutectic medium entropy alloys, Indentation and hardness, Laser remelting, Microstructure",

author = "Jiachen Zhang and Taiwen Huang and Zhonglin Shen and Su, {Hai Jun} and Jun Zhang and Lin Liu",

note = "Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",

year = "2021",

month = dec,

day = "1",

doi = "10.1016/j.matlet.2021.130710",

language = "英语",

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TY - JOUR

T1 - Enhanced structural refinement on eutectic medium-entropy alloy CrCoNiNb0.48 by laser remelting

AU - Zhang, Jiachen

AU - Huang, Taiwen

AU - Shen, Zhonglin

AU - Su, Hai Jun

AU - Zhang, Jun

AU - Liu, Lin

PY - 2021/12/1

Y1 - 2021/12/1

N2 - A novel efficient method to design eutectic medium-entropy alloys with typical lamellar structure is successfully proposed. The CrCoNiNb0.48 alloy is prepared with microstructure comprised of FCC and Laves phases. After laser remelting, the nano-scale eutectic lamellar is formed and the eutectic lamellar spacing is refined to approximately 30 nm from 300 nm (as-cast). Thus, the hardness of CrCoNiNb0.48 with laser remelting is approximately 50% increase over as-cast. Moreover, through calculation, the strain hardening exponent of the laser-treated alloy is almost twice of that in the as-cast alloy.

AB - A novel efficient method to design eutectic medium-entropy alloys with typical lamellar structure is successfully proposed. The CrCoNiNb0.48 alloy is prepared with microstructure comprised of FCC and Laves phases. After laser remelting, the nano-scale eutectic lamellar is formed and the eutectic lamellar spacing is refined to approximately 30 nm from 300 nm (as-cast). Thus, the hardness of CrCoNiNb0.48 with laser remelting is approximately 50% increase over as-cast. Moreover, through calculation, the strain hardening exponent of the laser-treated alloy is almost twice of that in the as-cast alloy.

KW - Compression properties

KW - Eutectic medium entropy alloys

KW - Indentation and hardness

KW - Laser remelting

KW - Microstructure

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U2 - 10.1016/j.matlet.2021.130710

DO - 10.1016/j.matlet.2021.130710

M3 - 文章

AN - SCOPUS:85113169748

SN - 0167-577X

VL - 304

JO - Materials Letters

JF - Materials Letters

M1 - 130710

ER -

Enhanced structural refinement on eutectic medium-entropy alloy CrCoNiNb0.48 by laser remelting

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Enhanced structural refinement on eutectic medium-entropy alloy CrCoNiNb_0.48 by laser remelting